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Related Concept Videos

Male Sexual Response: Erection & Ejaculation01:17

Male Sexual Response: Erection & Ejaculation

Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
Hormonal Regulation01:40

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH release.
Menopause01:28

Menopause

Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...

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Related Experiment Video

Updated: May 24, 2026

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
04:22

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility

Published on: May 30, 2025

Hormonal evaluation in premature ejaculation.

Metin İshak Oztürk1, Orhan Koca, Murat Tüken

  • 1Department of Urology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey.

Urologia Internationalis
|March 2, 2012
PubMed
Summary

Hormonal factors, including higher prolactin and free T4 levels, are associated with premature ejaculation (PE) in men. Evaluating hormonal imbalances may aid in managing this common sexual dysfunction.

Related Experiment Videos

Last Updated: May 24, 2026

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
04:22

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility

Published on: May 30, 2025

Area of Science:

  • Endocrinology
  • Urology
  • Sexual Medicine

Background:

  • Premature ejaculation (PE) is a prevalent sexual dysfunction impacting men's and partners' quality of life.
  • Hormonal imbalances are increasingly recognized as potential contributors to PE.

Purpose of the Study:

  • To investigate the association between specific hormonal factors and premature ejaculation (PE).

Main Methods:

  • A comparative study involving 107 male patients diagnosed with PE and 94 healthy male controls.
  • Serum hormone levels, including prolactin and free T4, were measured and compared between the groups.

Main Results:

  • Patients with PE exhibited significantly higher mean serum prolactin and free T4 levels compared to controls.
  • A higher prevalence of abnormal hormonal parameters, particularly hyperprolactinemia, was observed in the PE group.

Conclusions:

  • Hormonal factors, such as elevated prolactin and free T4, may play a significant role in the pathophysiology of premature ejaculation (PE).
  • Consideration of hormonal evaluation is recommended during the assessment of men with PE.